The Control Box 1. Canbeused on high-rise building, factoryplant or home for smoke and natural ventilation. 2. The window opener can be manual controlled in open, stop, close mode. 3. Fire and smoke response: when smoke is detected by the smoke sensor (not included in the Control Box), the sensor will send a signal to the Control Box so that window opener can opearte to open the windows. 4. One window or multi windows can be controlled according to the needs.